间瞄寻的导弹末段最优制导建模与仿真

Modeling and Simulation of the Optimal Terminal Guidance of Missile for Indirect Aiming

为了研究机动目标对制导精度的影响,将目标机动统计特性描述为目标加速度的微分是有色噪声序列并建立了相应的系统状态模型,比统计独立的白噪声序列具有更大的目标机动模式覆盖范围。采用Kalman滤波算法对系统状态模型进行求解,从而实现最优制导回路的闭合。仿真结果表明,与传统的导引律相比,该方案在不改变导弹硬件的前提下,提高了导弹攻击低空直升机等高机动目标命中精度的能力,为间瞄寻的导弹实现最优制导提供了设计参考。

In order to research the impact of maneuver target on guidance accuracy,the target maneuvering statistical characteristics described as differential of target acceleration is colored-noise-sequence,and related system state model is established.This method has larger range of target maneuver pattern than statistics of white-noise-sequence.The system state model is solved by Kalman filtering algorithm to realize the closement of optimal guidance loop.Simulation result indicates that the hit precision has been improved greatly when engaged for high maneuver targets such as lower-flying helicopter without changing the missile hardware.The paper provides design reference for optimal guidance of indirect aiming missile.